Suitable for a one-semester course in general relativity for senior undergraduates or beginning graduate students, this text clarifies the mathematical aspects of Einstein's theory of relativity without sacrificing physical understanding.

Now anyone with an earnest desire can learn to cast spells with this intriguing introduction to the craft. Written by a practicing witch, this all-encompassing first course in Wiccan magic simplifies everything from performing spells to conducting candle rituals and using a talisman.